CN212539208U - System for monitoring icing state of optical fiber composite ground wire of power transmission line - Google Patents
System for monitoring icing state of optical fiber composite ground wire of power transmission line Download PDFInfo
- Publication number
- CN212539208U CN212539208U CN202020353528.8U CN202020353528U CN212539208U CN 212539208 U CN212539208 U CN 212539208U CN 202020353528 U CN202020353528 U CN 202020353528U CN 212539208 U CN212539208 U CN 212539208U
- Authority
- CN
- China
- Prior art keywords
- optical fiber
- ground wire
- composite ground
- fiber composite
- monitoring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The utility model discloses a compound ground wire icing state monitoring system of transmission line optic fibre, include: the distributed optical fiber acoustic sensing demodulator is used for emitting optical pulses and demodulating phases of reflected Rayleigh scattering light; an optical fiber composite ground wire; the distributed optical fiber sensor is used for monitoring the strain parameters of each measuring point of the optical fiber composite ground wire; the computer system is used for receiving the strain parameters of each measuring point of the distributed optical fiber sensor sent by the distributed optical fiber acoustic sensing demodulator; a power transmission tower; the utility model has no power supply unit, the service life of the monitoring equipment is not limited by the severe environment, and the stability of the equipment is high; taking an optical fiber inside an OPGW optical cable erected by a line as a sensing optical fiber; meanwhile, no extra communication cost exists, and the information security is high; the light is used as a sensing medium, so that the electromagnetic interference is resisted, and the data measurement is accurate; the monitoring distance is long and distributed monitoring is realized.
Description
Technical Field
The utility model relates to a transmission line technical field specifically is transmission line optical fiber composite ground wire icing state monitoring system.
Background
The electric power system is a complex large system, comprehensive reliability evaluation is a key technology and is also an important component of reliability engineering, reliability evaluation is a process of estimating the performance index of the reliability of the evaluation system by utilizing a statistical method and means according to the reliability structure, the service life model and test information of equipment, and the reliability evaluation of the complex large system is always difficult due to the main reasons of technology, cost, test organization and the like, the distributed optical fiber sensing system can measure physical parameters such as stress, good vibration temperature and the like along sensing optical fibers, an advanced technical means is provided for the reliability evaluation of the complex large system, the distribution state of the dynamic tension of the high-voltage transmission line composite ground wire can be monitored through the distributed optical fiber sensing system, and the resolution reaches 1 m; the icing can cause the tension change of the optical fiber composite ground wire, the icing waving of the optical fiber composite ground wire can occur under the action of meteorological conditions, the optical fiber composite ground wire can show the alternating change of the dynamic tension, and the monitoring of the icing state of the composite ground wire of the power transmission line is realized through the statistical analysis of the dynamic tension.
However, at present, the monitoring of the icing state of domestic power transmission lines is mainly realized by a weighing/tension sensor, a lead temperature/inclination angle sensor, image monitoring and the like; the weighing/tension sensor and the wire temperature/inclination angle sensor for monitoring the icing state of the existing power transmission line are both electric measuring sensors, have the characteristics of nonlinearity, zero drift, creep deformation and the like, have unstable measuring results, short service life and poor reliability, and are easily interfered by strong electromagnetic environment around the power transmission line; the image monitoring method is adopted, and the image identification method has huge calculation amount, so that image data needs to occupy a large number of power communication channels; in addition, under the condition of large wind and snow, snow flakes and ice coating easily cover the lens of the monitor, so that the ice coating condition of the lead cannot be accurately distinguished, and the reliability of the CCD/COMS imaging system under the severe environment is poor.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a transmission line optical fiber composite ground wire icing state monitoring system to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: transmission line optical fiber composite ground wire icing state monitoring system includes:
the distributed optical fiber acoustic sensing demodulator is used for emitting optical pulses and demodulating phases of reflected Rayleigh scattering light;
an optical fiber composite ground wire;
the distributed optical fiber sensor is used for monitoring the strain parameters of each measuring point of the optical fiber composite ground wire;
the computer system is used for receiving the strain parameters of each measuring point of the distributed optical fiber sensor sent by the distributed optical fiber acoustic sensing demodulator;
a power transmission tower;
the distributed optical fiber acoustic sensing demodulator is fixedly installed on one side of the top end of the power transmission tower, and the optical fiber composite ground wire is fixedly installed on the top end of the power transmission tower.
Preferably, the distributed optical fiber sensor uses a single mode optical fiber of the optical fiber composite ground wire as the sensor.
Preferably, the optical fiber composite ground wire is used as a sensor and is arranged along the whole power transmission line.
Preferably, the method further comprises the following steps:
an optical fiber access device; the optical fiber access device consists of an optical fiber junction box and a high-voltage insulator;
the optical fiber access device is used for connecting the sensing optical fiber with the distributed optical fiber acoustic sensing demodulator and realizing the insulation isolation between the distributed optical fiber acoustic sensing demodulator and the optical fiber composite ground wire.
Preferably, the sensing optical fiber of the optical fiber composite ground wire is electrically connected with the distributed optical fiber acoustic sensing demodulator through an optical fiber access device.
Preferably, the computer system is electrically connected with the distributed optical fiber acoustic sensing demodulator through a USB interface.
Preferably, the distributed optical fiber sensor is fixed on the optical fiber composite ground line at certain intervals.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses there is not the power supply unit, monitoring facilities life-span does not receive adverse circumstances restriction, and equipment stability is high.
2. The utility model discloses the inside optic fibre of OPGW optical cable that erects with the circuit is as sensing optical fiber.
3. The utility model discloses do not have extra communication cost, the information security is high.
4. The utility model discloses use light as sensing medium, anti-electromagnetic interference, data measurement is accurate.
5. The utility model discloses the monitoring distance is long, and is the distributed monitoring.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a schematic diagram of the system structure of the present invention;
fig. 3 is a schematic diagram of mathematical analysis data according to the present invention.
In the figure: 1-distributed optical fiber acoustic sensing demodulator; 2-optical fiber composite ground wire; 3-a distributed fiber optic sensor; 4-an optical fiber access device; 5-a computer system; 6-power transmission tower.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1:
referring to fig. 1-3, the present invention provides a technical solution: transmission line optical fiber composite ground wire icing state monitoring system includes: the distributed optical fiber acoustic sensing demodulator comprises a distributed optical fiber acoustic sensing demodulator 1, an optical fiber composite ground wire 2, a distributed optical fiber sensor 3, a computer system 5 and a power transmission tower 6.
Further, the distributed optical fiber acoustic sensing demodulator 1 is configured to emit light pulses and perform phase demodulation on the reflected rayleigh scattered light.
Further, the distributed optical fiber sensor 3 is used for monitoring the strain parameters of each measurement point of the optical fiber composite ground wire 2.
The distributed optical fiber acoustic sensing demodulator 1 is fixedly installed on one side of the top end of the power transmission tower 6, and the optical fiber composite ground wire 2 is fixedly installed on the top end of the power transmission tower 6.
Further, the computer system 5 is configured to receive the strain parameters of the measurement points of the distributed optical fiber sensor 3 sent by the distributed optical fiber acoustic sensing demodulator 1.
The distributed optical fiber sensor 3 uses a single mode optical fiber of the optical fiber composite ground wire 2 as a sensor.
The optical fiber composite ground wire 2 is used as a sensor and is arranged along the whole line of the power transmission line.
Wherein, still include: an optical fiber access device 4; the optical fiber access device 4 is composed of an optical fiber junction box and a high-voltage insulator.
Further, the optical fiber access device 4 is used for connecting the sensing optical fiber with the distributed optical fiber acoustic sensing demodulator 1 and realizing the insulation isolation between the distributed optical fiber acoustic sensing demodulator 1 and the optical fiber composite ground wire 2.
The sensing optical fiber of the optical fiber composite ground wire 2 is electrically connected with the distributed optical fiber acoustic sensing demodulator 1 through the optical fiber access device 4.
The computer system 5 is electrically connected with the distributed optical fiber acoustic sensing demodulator 1 through a USB interface.
The distributed optical fiber sensors 3 are fixed on the optical fiber composite ground wire 2 at certain intervals.
Example 2:
referring to fig. 1-3, the present invention provides a technical solution: the technical scheme for monitoring the icing state of the optical fiber composite ground wire of the power transmission line comprises the following steps of:
s1, collecting dynamic tension distribution data of the optical fiber composite ground wire;
s2, calculating and generating a change value of each measured inching tension 60S;
s3, clustering and analyzing the correlation between the change value of the dynamic tension 60S and the icing state of the optical fiber composite ground wire;
and S4, establishing an optical fiber composite ground wire icing state regression mathematical model, and realizing monitoring of the optical fiber composite ground wire icing state.
The method comprises the steps of selecting 60s dynamic tension change values of m measuring points of the optical fiber composite ground wire as related influence factors of the icing state, carrying out regression analysis, deducing an icing state regression analysis model, and monitoring the icing state of the optical fiber composite ground wire.
By integrating the above embodiments, the change of the dynamic tension of the optical fiber composite ground wire under the ice coating condition along with time is selected as the related factor of the ice coating state, and the monitoring method for predicting the ice coating state of the optical fiber composite ground wire through multivariate linear regression analysis solves the problem that the accuracy of the monitored ice coating state is not high due to the fact that the parameters such as weather, wire tension, wire wind deflection angle and the like are selected in the existing analysis method and the data normalization, stability and accuracy of the wire ice coating state are poor through statistical analysis, and the error caused by the measurement accuracy can be reduced, the stability of a mathematical model is improved, and the random error is reduced by selecting the change value of the 60s dynamic tension of each measurement point of the optical fiber composite ground wire as the related influence factor of the ice coating state.
In the several embodiments provided in the present disclosure, it should be understood that the disclosed apparatus may be implemented in other manners. The welding or screwing or winding of the parts to be welded or screwed together as shown or discussed can be assisted by means of devices such as welding torches, screwing with wrenches, etc., and the parts of the device can be made of various materials, such as metal materials, for example, aluminum alloys, steel and copper, by casting or by mechanical stamping.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.
Claims (7)
1. Transmission line optical fiber composite ground wire icing state monitoring system which characterized in that includes:
the distributed optical fiber acoustic sensing demodulator (1), the distributed optical fiber acoustic sensing demodulator (1) is used for emitting light pulse and demodulating the phase of the reflected Rayleigh scattering light;
an optical fiber composite ground wire (2);
the distributed optical fiber sensor (3) is used for monitoring the strain parameters of each measuring point of the optical fiber composite ground wire (2);
the computer system (5) is used for receiving the strain parameters of each measuring point of the distributed optical fiber sensor (3) sent by the distributed optical fiber acoustic sensing demodulator (1);
a power transmission tower (6);
the distributed optical fiber acoustic sensing demodulator (1) is fixedly installed on one side of the top end of the power transmission tower (6), and the optical fiber composite ground wire (2) is fixedly installed on the top end of the power transmission tower (6).
2. The system for monitoring the icing state of the optical fiber composite ground wire of the power transmission line according to claim 1, characterized in that: the distributed optical fiber sensor (3) uses a single mode optical fiber of the optical fiber composite ground wire (2) as a sensor.
3. The system for monitoring the icing state of the optical fiber composite ground wire of the power transmission line according to claim 1, characterized in that: the optical fiber composite ground wire (2) is used as a sensor and is arranged along the whole line of the power transmission line.
4. The system for monitoring the icing state of the optical fiber composite ground wire of the power transmission line according to claim 1, further comprising:
an optical fiber access device (4); the optical fiber access device (4) is composed of an optical fiber junction box and a high-voltage insulator;
the optical fiber access device (4) is used for connecting the sensing optical fiber with the distributed optical fiber acoustic sensing demodulator (1) and realizing the insulation isolation of the distributed optical fiber acoustic sensing demodulator (1) and the optical fiber composite ground wire (2).
5. The system for monitoring the icing state of the optical fiber composite ground wire of the power transmission line according to claim 1, characterized in that: and the sensing optical fiber of the optical fiber composite ground wire (2) is electrically connected with the distributed optical fiber acoustic sensing demodulator (1) through the optical fiber access device (4).
6. The system for monitoring the icing state of the optical fiber composite ground wire of the power transmission line according to claim 1, characterized in that: and the computer system (5) is electrically connected with the distributed optical fiber acoustic sensing demodulator (1) through a USB interface.
7. The system for monitoring the icing state of the optical fiber composite ground wire of the power transmission line according to claim 1, characterized in that: the distributed optical fiber sensors (3) are fixed on the optical fiber composite ground wire (2) at certain intervals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020353528.8U CN212539208U (en) | 2020-03-19 | 2020-03-19 | System for monitoring icing state of optical fiber composite ground wire of power transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020353528.8U CN212539208U (en) | 2020-03-19 | 2020-03-19 | System for monitoring icing state of optical fiber composite ground wire of power transmission line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212539208U true CN212539208U (en) | 2021-02-12 |
Family
ID=74523031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020353528.8U Active CN212539208U (en) | 2020-03-19 | 2020-03-19 | System for monitoring icing state of optical fiber composite ground wire of power transmission line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212539208U (en) |
-
2020
- 2020-03-19 CN CN202020353528.8U patent/CN212539208U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11150083B2 (en) | Real-time overhead power line sag monitoring | |
| CN203310540U (en) | Temperature and strain on-line monitoring device integrating optical phase conductors | |
| CN102313852B (en) | Optical-fiber intelligent sensing power cable running state monitoring method and apparatus thereof | |
| CN112202493A (en) | Fault detection method, device and system for communication line | |
| CN102103173A (en) | Method and system for monitoring current-carrying capacity of cable based on distributed optical fiber temperature measuring method | |
| CN103033285A (en) | Simultaneous measurement method of temperature and strain of laid photoelectric composite cable | |
| CN115566804A (en) | Electric power monitoring system based on distributed optical fiber sensing technology | |
| CN112083263A (en) | Multi-source data fusion high-voltage cable line fault online positioning device and method based on traveling wave principle | |
| CN104635079A (en) | Electric aerial optical cable carrying capacity monitoring method based on whole-course distribution way | |
| CN108132109A (en) | A kind of temperature-measuring system of distributed fibers | |
| CN201955411U (en) | Cable current carrying capacity monitoring system based on distributed optical fiber temperature measuring method | |
| CN115615332A (en) | State on-line monitoring system of optical fiber composite overhead ground wire | |
| CN103616101A (en) | Method for detecting optical fiber composite ground wire icing state of electric transmission line | |
| CN111189485A (en) | System for monitoring icing state of optical fiber composite ground wire of power transmission line | |
| Pavlinic et al. | Direct monitoring methods of overhead line conductor temperature | |
| CN202511922U (en) | Oppc optical cable stress and carrying capacity measuring and calculating system | |
| CN212539208U (en) | System for monitoring icing state of optical fiber composite ground wire of power transmission line | |
| CN213213470U (en) | Fault detection system for communication line | |
| CN211783867U (en) | Cable on-line temperature measurement system based on power tunnel inspection robot | |
| CN109959847B (en) | Optical fiber passive pollution flashover monitoring system | |
| CN114659612A (en) | Rail transit train positioning system and method based on fiber bragg grating array | |
| CN111238627B (en) | Geographic information calibration method for strain tower in overhead transmission line | |
| CN112013908A (en) | Method for monitoring state of key stress point of overhead transmission line | |
| JPH0398214A (en) | Detection of accident point of optical fiber complex overhead earth-wire and overhead power transmission wire | |
| CN116388859B (en) | Optical fiber state monitoring data acquisition device, method, equipment and medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |